which sae oil for stringer

[vice]

which oil i have to use for omc stringer stern drive (full mechanical) for upper and lower unit?

 

[KCJ]

I use the Sierra Syn. Blend. I think it is 85 sae. Worked well for 5 years, until I sold the boat, 79 Cruiser, Inc.

 

[hystat]

80W90 in upper, lower, and intermediate (and you can use 80W90 in the tilt clutch too to keep it real simple despite the factory recommendation of 30 in tilt)

 

[vice]

thanks!